| const API_URL = 'https://www2.deepl.com/jsonrpc'; |
| const HEADERS = { |
| 'Content-Type': 'application/json', |
| }; |
|
|
| export type RequestParams = { |
| text: string; |
| sourceLang: string; |
| targetLang: string; |
| }; |
|
|
| export type RawResponseParams = { |
| jsonrpc: string; |
| id: number; |
| result: { |
| texts: { |
| alternatives: { |
| text: string; |
| }[]; |
| text: string; |
| }[]; |
| lang: string; |
| lang_is_confident: boolean; |
| detectedLanguages: { unsupported: number } & Record<string, number>; |
| }; |
| }; |
|
|
| const buildRequestData = (params: RequestParams) => { |
| const getTimeStamp = () => { |
| const ts = Date.now(); |
| const iCount = params.text.split('i').length; |
| return iCount > 1 ? ts - (ts % iCount) + iCount : ts; |
| }; |
|
|
| const postData = { |
| jsonrpc: '2.0', |
| method: 'LMT_handle_texts', |
| id: Math.floor(Math.random() * 90000000) + 10000000, |
| params: { |
| texts: [{ text: params.text, requestAlternatives: 3 }], |
| timestamp: getTimeStamp(), |
| splitting: 'newlines', |
| lang: { |
| source_lang_user_selected: params.sourceLang.toUpperCase(), |
| target_lang: params.targetLang.toUpperCase(), |
| }, |
| }, |
| }; |
|
|
| let postStr = JSON.stringify(postData); |
|
|
| if ((postData.id + 5) % 29 === 0 || (postData.id + 3) % 13 === 0) { |
| postStr = postStr.replace('"method":"', '"method" : "'); |
| } else { |
| postStr = postStr.replace('"method":"', '"method": "'); |
| } |
|
|
| return postStr; |
| }; |
|
|
| export const query = async (params: RequestParams) => { |
| const response = await fetch(API_URL, { |
| headers: HEADERS, |
| method: 'POST', |
| body: buildRequestData(params), |
| }); |
|
|
| if (!response.ok) { |
| throw new Error( |
| response.status === 429 ? 'Too many requests, please try again later.' : 'Unknown error.', |
| ); |
| } |
|
|
| const { result } = (await response.json()) as RawResponseParams; |
| return { |
| translations: [ |
| { |
| detected_source_language: result?.lang || params?.sourceLang || 'auto', |
| text: result?.texts?.[0]?.text || '', |
| }, |
| ], |
| }; |
| }; |
|
|
